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Vulnerability record · CVE-2023-2673 · published 13 June 2023

CVE-2023-2673: Phoenixcontact fl mguard 2102 firmware vulnerability

Phoenixcontact · Fl Mguard 2102 Firmware

Improper Input Validation vulnerability in PHOENIX CONTACT FL/TC MGUARD Family in multiple versions may allow UDP packets to bypass the filter rules and access the solely connected device behind the MGUARD which can be used for flooding attacks.

5.3 CVSS 3.1 Medium EPSS 0.62% · top 52.1% CWE-1287 · CWE-1287
5.3CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
26Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Improper Input Validation vulnerability in PHOENIX CONTACT FL/TC MGUARD Family in multiple versions may allow UDP packets to bypass the filter rules and access the solely connected device behind the MGUARD which can be used for flooding attacks.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

26 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert.vde.com/en/advisories/VDE-2023-010/ MitigationThird Party Advisory
https://cert.vde.com/en/advisories/VDE-2023-010/ MitigationThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-2673), CISA KEV, FIRST EPSS (scores of 2026-10-04). This page is refreshed as NVD updates the record.